In the Tree View under the Node, you will see a list of all applications and a status circle showing green for started and red for stopped.
Start an app
Right click the app and select Commands then Start. The status circle should change to green and a popup appear in the bottom right corner saying the app has started.
Stop an app
Right click the app and select Commands then Stop. The status circle should change to red and a popup appear in the bottom right corner saying the app has stopped.
Restart an app
Right click the app ands select Commands then Restart. The status circle should remain green and a popup appear in the bottom right corner saying the app has restarted.